#fuel economy

[goshyesvintageads]

Volkswagen of America Inc, 1979

[maklodes]

Americans traditionally measure the fuel economy of their cars in miles per gallon. Europeans tend to use liters/100 km. Americans not only use their customary unit rather than metric, but also have a measurement that is reciprocal to the European one. (To convert one to the other, divide 235.215 by the number you already have – although official stats may still not be comparable, because the U.S. and Europe use different test-routines to determine city/highway mileage. FWIW, I’ve heard that both U.S. and European tests are too optimistic about fuel economy compared to the real world, but European tests are a little more optimistic and further from reality.)

I think metric is better in general (but Europeans really should have done liters/1000 km! Then their measurements would have two digits of precision for typical modern sedans, crossovers, and such without going past a decimal point, plus 10^6 m is a better metric distance standard than 10^5 m.), but fuel per distance and distance per fuel both have arguments in their favor: do you want to know how far you can go on a tank of gas (American), or how much gas you’ll need to go a given distance (European)? Is it better to have bigger numbers be better, so good fuel economy is viscerally impressive in the same way as high horsepower (American), or is it better to have a number directly proportional to fuel consumption, so it’s obvious that going from 12 L/100km to 6 L/100km is twice as important as going from 6L/100km to 3L/100 km, whereas in the American system it’s less readily apparent that going from 19 MPG to 38 MPG saves twice as much fuel as going from 38 to 76 MPG? (assuming constant distances) I think the European system of volume over distance is probably somewhat more sensible on the whole, but not as clearcut as the metric vs customary issue.

What strikes me as interesting, though, is to consider the European system: liters per 100 km. That’s volume – x^3 – over distance – x. Phrased like that, you can see the immediate temptation: what if we reduce x^3/x to x^2? Now our units of fuel economy are in area. If we have a vehicle that uses 6 L/100 Km, we can phrase that as 6 * 10^-3 m^3 / 10^5 m, which is 6 * 10^-8 m^2, about 6% of a square millimeter.

Does that actually mean anything, though, or is it just an artifact of misused dimensional analysis, like claiming that torque can be measured in joules because newtons * meters = joules, when really torque just isn’t energy? I think the area measurement of fuel economy actually does have a physical interpretation: if you were driving, and a tiny filament of liquid gasoline with this cross-sectional area traced your route, then that filament of gasoline would be approximately enough fuel for your trip.

I can’t think of a physically intuitive explanation of what the dimensionally-reduced American measure of efficiency (reciprocal area) is, though.

[somethingusefulfromflorida]

When I first bought my car back in April I never let it dip below half a tank. Since I moved in September, I usually wait until it's below a quarter before filling up. Last week I let it run down to about an eighth, and it took a hair over 14 gallons to fill it up completely which means it has a 16 gallon tank, more or less. When I got it, I lived in an area dominated by highways; I would regularly get it up to 60 mph going to a from work, and it got decent gas mileage at 30 per gallon. Now that I live in a dense city with stop lights every 10 feet, I'm lucky to get 20. On the dashboard above the radio is a little LCD screen that tells me my fuel economy and how many miles I have left until I run empty. I've been tracking those figures against my odometer since mid-May, and it's not good.

When I got it, I would regularly outperform expectations. Say I drove 100 miles, the fuel range indicator would only go down 90, meaning I traveled 10 miles further than it said I should based on the amount of fuel I used. This slowly crept down, 10 miles better, 7 miles, 5, 3, for a while it was dead even, but since July I've been in the read. I'll drive 100 miles, and the fuel range meter will go down 120 or 130. Doing the math, driven distance over fuel range decrease, my best performance was 120% efficient, and the worst was 65%. Think about that. 65%, less than two-thirds, which means for every 100 miles I drive my fuel tank thinks I'm driving over 150! I'm burning through it like it's nothing!

I don't know what kind of math is going down under the hood, but my maximum fuel range has been dropping too. In April, a full tank of gas could supposedly get me 396 miles; more than that, actually, given my net positive fuel efficiency. Filling it up last week, same tank, same 16 gallons, it's telling me I can only get 323 miles. 396 miles on 16 gallons, the computer thought I was getting 24.75 miles per gallon regardless of how good it actually was. 323 miles is 20.1875 mpg; the indicator regularly dips below 20 when I'm stuck in traffic, and I can actually watch it tick down in increments of 0.1 when I'm at particularly congested redlights.

Sooner or later, it's going to get to the point where I'm less than half efficient. I'll drive 100 miles, and it'll use the fuel for 200 or more. I'll be lucky to get 250 miles on a full tank, which at present time would cost me $50 to fill from empty. Gas prices were higher this summer, $3.80-ish, got down to just below $3.00 even in October, right now they're hovering around $3.20 - $3.30, and as we enter the presidential election I can see it exploding up to $4.00 or more again, over $60 for a full tank.

My car's a 2007 with 132,000 miles on it, so I guess this sort of degradation is to be expected, but it means that it's going to crap out on me in a couple of years. Once I start my new job I'll have to build back up my savings so I can buy something halfway decent. It took me a year and a half to save up $10,000 when I lived with my parents, but now I'm out on my own and have rent and medical bills (I make so little money that I get a tax credit from the IRS that completely covers my insurance, but it's the cheapest plan on the market with next to no coverage, so every doctor visit is astronomical), so I expect to be stuck with my clunker until 2025 at the earliest. I just hope it'll last that long.

[techdriveplay]

Chery Tiggo 7 Pro Ultimate - TDP Review

[fuelmyride]

Watch this video and learn how Fuel Factor X works and the benefits from using it. You'll see some test results too.

[mintexpress]

𝐆𝐨𝐢𝐧𝐠 𝐨𝐧 𝐚 𝐫𝐨𝐚𝐝 🗺 𝐭𝐫𝐢𝐩 𝐨𝐫 𝐧𝐞𝐞𝐝 𝐭𝐨 𝐒𝐚𝐯𝐞 𝐦𝐨𝐧𝐞𝐲 𝐨𝐧 ⛽️𝐠𝐚𝐬? 𝐓𝐫𝐲 “𝐅𝐅𝐗” 𝐝𝐫𝐢𝐯𝐞 𝐟𝐮𝐫𝐭𝐡𝐞𝐫 𝐚𝐧𝐝 𝐩𝐫𝐨𝐭𝐞𝐜𝐭 𝐭𝐡𝐞 🌍 𝐩𝐥𝐚𝐧𝐞𝐭.

https://stashcoins.com/ffx/

[glitterystarlightpirate]

Gas Prices and the Presidential Elections

Woowee! Gas prices sure are high nowadays, aren't they? In some parts of the country, people are paying $8 a gallon for diesel, and $5 a gallon for premium; it might not be too long before that's the norm. Well, here's a tip to beat the high cost of gas: during the past 4 presidential elections, the gas companies reduced their prices just before November during the election year for that election; usually the price breaks start around July or August, and continue until November. Not too much of a help, because it's a crapshoot if they'll do it this year, and how are you going to stock up on gas? Well, if you use fuel oil to heat your home, then, sometime between August and November, might be a good time to buy. Though, it is a gamble, and prices might increase then. Usually the price breaks stays put until a month or so after the election, at which time the oil companies start to increase prices. So, bet you're wondering why the gas companies do that? Well, everybody knows how conservative the oil companies are, so obviously they think lowering the prices just before the election, makes people think a conservative candidate would be best to vote for - in case you need a clue, according to corporate media news, conservative candidates are Republicans. One things for certain, gas prices are increasing at an alarming rate, and no matter what either candidate says, they won't be able stop the rate of inflation for gasoline prices. The best you can do, voting in the election this year, is to vote for someone who is going to help you, rather than hurt you, and other people.

[jrnerad]

Texas-Tested: 2025 Ram 1500 Hits the (Back) Road

Driving the heavily revised 2025 Ram 1500 brought on a strange sensation. Instead of giving a sense of raw muscle, it offered the sophistication of an uptown limousine. In fact, we’d bet that most limousines don’t ride as well or offer as much stretch-out room as the Ram 1500 Crew Cabs. For 2025, Ram is offering a new line-topping Tungsten model, and it has goosed up the already strong…

[duanee30-blog]

Is There Really Any Benefit To Using Higher Octane Fuel In A Vehicle Not Designed For It?

Unless your owner's manual specifically recommends using high octane fuel, save yourself a lot of money by using lower octane fuel.

Using a higher octane fuel in cars that don’t require it typically does not make a significant difference in performance or fuel efficiency. Octane rating primarily indicates a fuel’s resistance to knocking or pinging in high-performance engines with higher compression ratios. However, in engines designed to run on regular (lower octane) gasoline, using a higher octane fuel generally does not…

[magmaonlineinsurance]

Fuel economy tips for summer

Driving in the summers often means having to turn the air conditioning (AC) on full blast for long periods, which can bring down your fuel economy considerably. Regardless of the season, but especially in the summer, with the AC on, it is much better to drive within a certain range of speeds for optimized fuel economy.

[cbdking1976]

Most of you know I sell amazing Quality Healthy products- but some of you don’t realize I basically have my own little personal “amazon “ type shop full of really great unique HEALTHY things!

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Shampoo- Conditioner- Deep Conditioning Treatment- Hair Serum

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🌱 C B D infused Anti Aging Moisturizer

🌱 C B D infused Night Cream with Collagen and Retinol

🌱 C B D Bathbombs that smell amazing and leave NO residue in your tub! 30mg cbd for a relaxing soak in the tub- like a spa day in the comfort of your own home!

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⛽️ A Gas Additive- since I’ve been using it- I am getting an EXTRA 80 Miles out of my tank of gas!

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More things as well but I’m sure most of you didn’t even read this far anyway 🤣

If any of these things peak your interest- let me know! I’m always here to help!

[techdriveplay]

Choosing the Right Fuel: Gasoline vs. Diesel vs. Hybrid

In the ever-evolving landscape of automotive technology, consumers are constantly faced with choices that can significantly impact their driving experience and environmental footprint. One of the most critical decisions revolves around the type of fuel that powers their vehicles. The debate between Gasoline vs. Diesel vs. Hybrid engines is more relevant than ever, as each option offers distinct…

[fuelmyride]

Regular Fuel on Porsche Cayman? Yes You Can With Fuel Factor X 

Stop using premium and save money right at the pump with Fuel Factor X. I've been using FFX in my Porsche Cayman for decade and never have to use premium. Learn more, http://FuelMyRide.org

[bouncinghedgehog]

Eco mode

[atlastv]

"Moonshiners Make Gasoline Out Of Alcohol During Gas Shortage | Moonshiners"